Thanks - I did try this, before and after your suggestion just in case I was temporarily in an alternate universe, however it was unsuccessful. I've commented out all the versions I've tried.

And the constants are defined in the sub-module so ppSlideSizeLetterPaper is a number as far a perl is concerned. 

  # Set the slide size
#  $PPT->page_setup( { slidesize  => 'ppSlideSizeLetterPaper',
#                      width      => 11*72,
#                      height     => 8.5*72 } );

#  $PPT->page_setup( { slidesize  => 'ppSlideSizeLetterPaper' } );

#  $PPT->page_setup( { width      => 11*72,
#                      height     => 8.5*72 } );

  $PPT->page_setup( { slidesize  => '5' } );

[download]
Here's the result of trying a number: 
PowerPoint.pm(): options:
                    slidesize=5

PowerPoint.pm(): slide size=7
PowerPoint.pm():   width=960
PowerPoint.pm():  height=540

[download]
Ideas?

In reply to Re^2: Win32::PowerPoint extension by EnzoXenon
in thread Win32::PowerPoint extension by EnzoXenon

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